Separate the access fee from the usage fee. Capture margin on both.
The default membership model in most service businesses is straightforward: pay a monthly fee, use the service as much as you want. It is easy to sell. And it creates a structural margin problem that gets worse as your business grows.
Every unlimited member who uses the service above the breakeven threshold is costing you money. The more successful your marketing is at attracting engaged, high-frequency users, the more your margins compress. The incentive structure is backwards: your heaviest users are often the members producing the least margin per visit.
Illustrative scenario. Assumes $49/mo unlimited fee, $8 per-visit cost, $15 access fee, $7 member visit price, $5 variable cost per visit. Your actual crossover and margin numbers depend on your cost structure and pricing. A TMN diagnostic models this with your real data.
Costco solved this problem decades ago. The membership fee is not payment for products. It is payment for access to better pricing. The actual goods are sold at near-cost. The membership fee monetizes access. The transaction monetizes usage. That separation protects margin as volume grows.
Applied to service businesses, this means splitting the access component from the usage component. The membership fee buys the right to member-only pricing on each visit. The operator captures margin on both the access fee and the per-use revenue. The customer gets a meaningfully better price per visit than a non-member. And the operator's margins no longer deteriorate with higher usage.
The Costco model is not right for every operator or every market. It works best when per-service costs are meaningful (not negligible), when there is a wide range of usage frequency across the member base, when the operator is competing against both high-volume discount and premium competitors, and when the current unlimited model is producing a significant number of members whose usage exceeds the margin threshold.
It also works as a complementary tier alongside traditional unlimited plans, creating a lower barrier to entry for price-sensitive customers who want member benefits without committing to a high monthly fee.
Car wash. A multi-location car wash operator charges $49/month for unlimited washes. Per-wash cost (water, chemicals, equipment wear, labor) is roughly $8. Any member who washes more than 6 times per month is costing the operator money. Usage data shows 35% of unlimited members wash 8+ times per month. The operator introduces an access tier: $15/month membership fee plus $5 per wash (vs. $12 per wash for non-members). Members who wash 4 times a month pay $35 total, save $13 vs. non-member pricing, and generate $23 in margin for the operator. At 10 washes, they pay $65 total but the operator still clears $19 in margin. Under the old unlimited plan at 10 washes, the operator was losing $31.
Fitness. A boutique fitness studio charges $159/month for unlimited classes. Class cost (instructor, space, utilities) is roughly $18 per head. Breakeven is 9 classes per month. The studio's most engaged members attend 12 to 15 classes. Under a Costco model: $49/month access fee plus $10 per class (vs. $25 drop-in for non-members). A member taking 10 classes pays $149 total, saves $101 vs. drop-in pricing, and the studio clears $129 in margin instead of losing $111 under unlimited.
HVAC. An HVAC operator charges $199/year for an "unlimited maintenance" plan covering 2 scheduled visits plus priority emergency service. Some customers call 4 to 5 times per year. Per-visit cost is roughly $85. The operator restructures: $99/year access fee that locks in member pricing of $65 per service call (vs. $125 for non-members). The access fee creates sunk cost commitment. Every service call generates positive margin. The operator stops losing money on high-usage customers and stops subsidizing them with revenue from low-usage members who never call.
The most common mistake is setting the access fee too high, which eliminates the low barrier to entry that makes the model work. The access fee should feel like a small commitment that buys a meaningful pricing advantage, not a full membership in disguise. If the access fee alone is comparable to what competitors charge for full membership, you have priced yourself out of the value proposition.
The second mistake is not making the per-use savings visible. A member paying $15/month plus $5 per wash needs to see "$7 saved on this wash" on every receipt. Without that, the access fee feels like an arbitrary charge and the per-use price feels like a normal price. The endowment effect and sunk cost only work when the member is continuously reminded of what their investment is buying them.
The third mistake is offering the Costco tier without restructuring the unlimited tier. If both options exist at similar total cost for moderate users, you cannibalize your own plans. The Costco tier should be positioned as the smart choice for moderate users (3 to 6 visits per month), while the unlimited tier is repositioned as the premium option for heavy users at a price that actually covers the cost of their usage.
The math question: If a meaningful share of your member base consistently exceeds breakeven usage, your pricing architecture is transferring margin from the operator to the heaviest users. The Costco model addresses that at the structural level.
"Customers will hate paying per use." Not when the savings are obvious. A member paying $5 per wash vs. $12 for a walk-in sees the per-use charge as a benefit, not a penalty. The access fee buys the right to better economics. If the savings are not clear on every receipt, the framing breaks.
"Unlimited competitors will crush us." Depends on the market and your positioning. If competitors offer unlimited at $49 and lose money on heavy users, that is their margin problem. A well-designed access tier can capture the moderate-use segment that unlimited plans overcharge and underserve.
"This will hurt retention." The opposite is more likely. The access fee creates sunk cost that pulls members back to the service. Members who stop visiting under unlimited plans feel nothing. Members under a Costco model feel the access fee and are more likely to re-engage or cancel faster. Both outcomes are better than silent zombie member buildup.
You do not need to blow up your current plans to test this. Start with 4 steps:
1. Identify the breakeven visit count for your unlimited plan. Divide the monthly fee by your per-service cost.
2. Segment your members by monthly usage frequency. How many are above breakeven?
3. Model the revenue impact if moderate users (3 to 6 visits) moved to an access-fee-plus-per-use tier.
4. Launch as a complementary tier. Do not replace unlimited. Give moderate users a lower-commitment option that still generates positive margin at every usage level.
Size the opportunity. The Profit Triangle Calculator takes your location count, members, average revenue, and churn rate and returns a range of annual recoverable revenue.
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